Hi, Komatsu pc 120 - 6E Stick doesn't retract fully & slow movement. At the moment don't have the serial number. In this machine bucket also slow in operation. Stick doesn't retract fully and slow in operation even without a load. when control levers bring to neutral position stick extend quickly and move down by its own weight. Foundout that the stick cylinder piston pressure seals and guide seals are good in condition. What could be the issue for this ? I was able to findout the manual for pc120-6. But i don't know whether is it compatible with - 6E model.because i am not familiar with komatsu machines. If someone has manual for -6E please be kind enough to help me. Thank you.
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